I just found the pictures of the mustang with the RB motor Tom, you have them there. As for fitting a hemi into a Mustang, oh my lord the Mopar ‘Purists’ would have you hanging from a tree!
That old heap of a dart went well for a little mechanical cam , pump gas motor though, 3400lbs it went 9.90 on street tires, through the mufflers, I have some little video clips somewhere, if only I could find them- hum…